CNAME and gethostbyname()

[Gisle Vanem]

I'm doing a small implementation of gethostbyname()
and friends. My question; if my resolver gets a CNAME
record for a query, where do I put the CNAME in the
hostent structure?

Do I (1) put it in 'h->h_name' (potentially replacing the old one). 
Or (2) do I put in 'h->aliases[0]' with the original query name 
put in 'h->h_name'?

AFAIK, the CNAME records are sometimes called "aliases" 
but are technically referred to as "Canonical Name" entries.
Hence my confusion.

--gv